CN112821104A - Contact element of tight connector and manufacturing method of contact element - Google Patents

Abstract

The invention relates to the technical field of connectors, in particular to a contact element of a tight connector and a manufacturing method of the contact element of the tight connector, wherein the contact element of the tight connector comprises an elastic body and a plurality of conductive blocks, the elastic body comprises two connecting rings and a plurality of grid bars arranged between the two connecting rings at intervals, the grid bars comprise a first side and a second side respectively connected with the two connecting rings and a third side and a fourth side arranged between the first side and the second side, the third side and the fourth side are oppositely arranged, the third side of each grid bar is twisted to enable the third side of each grid bar to be positioned in the direction close to the center of the connecting ring, and each grid bar is provided with the conductive block. The contact has good elasticity and conductivity, is not easy to fatigue and has small resistance value.

Description

Contact element of tight connector and manufacturing method of contact element

Technical Field

The invention relates to the technical field of connectors, in particular to a contact element of a compact connector and a manufacturing method of the contact element.

Background

In the current market, the contact element of the contact plug-in unit is connected with a conductor by providing elasticity and electric conduction through a pot spring structure or by providing elasticity and electric conduction through a torsion pot spring angle structure, and the two modes both need to use special raw materials to enable the contact element to have the elasticity and the electric conduction function, and have the following main problems:

(1) the price of special raw materials is high and the manufacturing process is monopolized abroad.

(2) Special raw and other materials appear tiredly in material elasticity easily, lead to the connecting piece to appear the resistance value big, lead to the temperature rise, the burning phenomenon appears easily, and is unsafe, along with present miniaturization and the multi-functionalization to the product, the electric current of passing through constantly increases, and the burning phenomenon can be more frequent in this time, and the solution is that the high temperature resistant requirement to external insulation plastic material is higher and higher, still can not solve the problem simultaneously.

(3) When the elasticity of the material is increased, the conductivity of the conductor is sacrificed, and other non-conductive metal molecular materials are added on the basis of the original conductor material to be fused, namely, the conductivity of the special raw material is poor, the stronger the conductivity of the elastic material is, the lower the passing current is, the more easily the material is fatigued and the more easily the material is burnt, and the function and the risk reduction can be realized only by enlarging the conductor.

(4) The special raw materials have high requirements and cost for surface treatment, and only expensive metal materials can be electroplated to ensure the electroplating adhesive force and the requirement of repeated plugging and unplugging (gold materials and silver materials).

(5) The materials forming the conductive connection are different in origin, so that another insulation can be formed on the surfaces of different materials in long-time extrusion, the contact resistance is increased, and finally the non-conductive condition can occur.

Disclosure of Invention

In order to overcome the disadvantages of the prior art, a first object of the present invention is to provide a contact of a close contact which has good elasticity and conductivity, is less prone to fatigue, and has a small resistance value.

A second object of the present invention is to provide a method for manufacturing a contact of a mating connector, which is simple, highly controllable, and suitable for mass production.

The first purpose of the invention is realized by the following technical scheme:

a contact element of a compact connector comprises an elastic body and a plurality of conductive blocks, wherein the elastic body comprises two connecting rings and a plurality of grid strips arranged between the two connecting rings at intervals, the grid strips comprise a first side and a second side respectively connected with the two connecting rings and a third side and a fourth side arranged between the first side and the second side, the third side and the fourth side are arranged oppositely, the third side of each grid strip is twisted to enable the third side of each grid strip to be positioned close to the center direction of the connecting rings, and each grid strip is provided with the conductive blocks.

Wherein, the third side direction of the grid bars is rotated by 30 to 70 degrees in the direction close to the center of the connecting ring.

The grid strip penetrates through the middle of the conductive block and is connected with the conductive block, and the conductive block is arranged in the middle of the grid strip.

And the side edges of the conductive blocks are all provided with arc-shaped guide surfaces.

And one corner of the conductive block, which is close to the center of the connecting ring, is provided with an inclined guide surface, and the inclined guide surface extends from the end surface of the conductive block, which is connected with the grid bars, to the side surface of the conductive block and gradually inclines towards the direction close to the center of the connecting ring.

And the conductive block is in clamping fit with the grid bars.

Two limiting parts for blocking the movement of the conductive block are arranged on two sides of the conductive block, which are positioned on the grid bars.

Wherein, the connecting ring is provided with a position-giving opening.

Wherein the two connection rings and the plurality of grid bars are integrally formed.

The second purpose of the invention is realized by the following technical scheme:

a method for preparing a contact of a tight connector comprises the following preparation steps:

firstly, taking a flat stainless steel material, and then punching a plurality of grid strips arranged at intervals and two connecting plates respectively connected with two ends of the grid strips on the flat stainless steel material through a punching die to obtain a stainless steel workpiece;

step two, taking two conductive materials, punching a convex clamping structure on two opposite sides of one conductive material through a punching die, and punching a groove matched with the clamping structure in a clamping manner on the other conductive material;

step three, respectively arranging the two conductive materials punched in the step two on two sides of the grid bars, and clamping the two conductive materials on the grid bars through clamping matching of clamping structures on the two conductive materials and grooves;

punching the conductive materials clamped on the grid bars through a punching die, so that the two conductive materials clamped and matched with each other are punched into a flat plate structure;

step five, the grid bars fixed with the conductive materials and punched in the step four are punched and bent through a punching die, so that the conductive materials and one side of the grid bars rotate;

and step six, performing rounding treatment on the stainless steel workpiece subjected to the treatment in the step five through a die, and enabling two ends of a connecting plate on the stainless steel workpiece to be close to each other until the stainless steel workpiece forms a circular ring shape to obtain the contact element.

The invention has the beneficial effects that:

according to the invention, by arranging the elastic body and the conductive block, when the terminal plug at the other end is inserted into the contact element, the plug abuts against the conductive block, so that the conductive block and the grid strips are simultaneously subjected to outward abutting force of the plug, the third side of the grid strips drives the conductive block to rotate outwards due to the elasticity of the elastic body, the plug is smoothly inserted into the contact element, and due to the elastic restoring force of the grid strips of the elastic body, the grid strips give the elastic force of the conductive block rotating towards the middle part of the connecting ring, so that the conductive block always abuts against the surface of the plug, and the conductive block and the plug are kept in good electric connection.

The contact piece is provided with elasticity by the elastic body, and is provided with conductivity by the conductive block, so that the conductivity and the elasticity of the contact piece cannot be influenced mutually.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic view of the structure of a contact of the present invention;

FIG. 2 is a schematic structural view of another perspective of the contact of the present invention;

FIG. 3 is a top view of a contact of the present invention;

FIG. 4 is a side view of a contact of the present invention;

FIG. 5 is a schematic representation of the stainless steel material of the present invention after stamping the grid bars and webs;

FIG. 6 is a schematic view of a conductive material having a clamping structure and a groove stamped thereon;

FIG. 7 is a schematic view of the first and second conductive portions of the present invention disposed on opposite sides of a grid strip;

FIG. 8 is a schematic view of the first and second conductive portions of the present invention after snap-fit engagement on both sides of the grid bar;

FIG. 9 is a schematic diagram of the process of rounding a stainless steel workpiece according to the present invention.

Description of reference numerals: 1. an elastic body; 11. a connecting ring; 111. a let position port; 112. a first positioning portion; 113. a second positioning portion; 12. grid bars; 121. a first side; 122. a second side; 123. a third side; 124. a fourth side; 125. a connecting portion; 126. a limiting part; 127. a clamping part; 2. a conductive block; 21. a first conductive portion; 211. a clamping structure; 22. a second conductive portion; 221. a groove; 3. an arc-shaped guide surface; 4. an inclined guide surface; 5. stainless steel material; 6. a connecting plate; 7. a conductive material.

Detailed Description

The conception, the specific structure, and the technical effects produced by the present invention will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the features, and the effects of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and those skilled in the art can obtain other embodiments without inventive effort based on the embodiments of the present invention, and all embodiments are within the protection scope of the present invention. In addition, all the connection/connection relations referred to in the patent do not mean that the components are directly connected, but mean that a better connection structure can be formed by adding or reducing connection auxiliary components according to specific implementation conditions. All technical characteristics in the invention can be interactively combined on the premise of not conflicting with each other.

Example 1

A contact of a close contact, as shown in FIGS. 1-4, comprises an elastic body 1 and a plurality of conductive blocks 2, wherein the elastic body 1 comprises two connecting rings 11 and a plurality of grid bars 12 arranged between the two connecting rings 11 at intervals, the grid bars 12 comprise a first side 121 and a second side 122 respectively connected with the two connecting rings 11 and a third side 123 and a fourth side 124 arranged between the first side 121 and the second side 122, the third side 123 and the fourth side 124 are oppositely arranged, the third side 123 of the grid bars 12 is twisted to enable the third side 123 of the grid bars 12 to be positioned close to the center direction of the connecting rings 11, and each grid bar 12 is provided with the conductive block 2.

According to the invention, by arranging the elastic body 1 and the conductive block 2, when a terminal plug at the other end is inserted into the contact element, the plug is pressed against the conductive block 2, so that the conductive block 2 and the grid strip 12 are simultaneously pressed by the outward pressing force of the plug, the third side 123 of the grid strip 12 drives the conductive block 2 to rotate outward due to the elasticity of the elastic body 1, so that the plug is smoothly inserted into the contact element, and due to the elastic restoring force of the grid strip 12 of the elastic body 1, the grid strip 12 provides the elastic force for the conductive block 2 to rotate towards the middle part of the connecting ring 11, so that the conductive block 2 is always pressed against the surface of the plug, and the conductive block 2 and the plug are kept in good electric connection.

The contact piece is provided with elasticity by the elastic body 1, and is provided with conductivity by the conductive block 2, so that the conductivity and the elasticity of the contact piece cannot be influenced mutually, when the contact piece is manufactured, the elastic body 1 can be prepared by selecting elastic materials with lower price, and the conductive block 2 is prepared by selecting conductive materials 7 with better conductivity, so that the contact piece has good elasticity and conductivity, the resistance value of the conductive block 2 cannot be increased due to fatigue of the elastic body 1, the working temperature of the contact piece can be reduced, the combustion phenomenon is avoided, the safety performance of the contact piece is improved, and the service life of the contact piece is prolonged.

Specifically, the elastic body 1 is a stainless steel elastic body 1, which has good elasticity, and is beneficial to ensuring that the conductive block 2 stably presses against the surface of the plug all the time, and ensuring that the conductive block 2 is in good electrical connection with the plug, the conductive block 2 is a copper conductive block 2, which has good conductivity, the conductivity can reach more than 99% (the conductivity of the best special raw material is only 16%), the smaller the resistance value of the conductor material with higher conductivity is, the smaller the temperature rise when the contact piece with the same thickness and size is, the larger the current can pass, the safer the performance is, and the lower the requirement on the high temperature resistant material of the plastic material required by the exterior of the connector is. The materials forming the conductive connection are the same in origin, and other substances cannot influence the conductive function in long-term operation.

The third side 123 of the grid bar 12 rotates 30-70 degrees towards the direction close to the center of the connection ring 11, the twisting angle of the grid bar 12 not only enables the terminal plug to be smoothly inserted between the plurality of conductive blocks 2, but also enables the conductive blocks 2 to stably press the surface of the terminal plug after the terminal plug is inserted into the contact element, so that the conductive blocks 2 and the terminal plug are well electrically connected, and the condition of open circuit between the conductive blocks 2 and the plug is avoided. When the twisting angle of the grid bar 12 is too small, it is difficult to ensure that the conductive block 2 can always press against the surface of the terminal plug, so that the disconnection phenomenon is easy to occur between the conductive block 2 and the plug, and when the twisting angle of the grid bar 12 is too large, the terminal plug is difficult to smoothly insert into the contact element, which affects the installation efficiency.

The conductive block 2 is a rectangular block, the grid strips 12 penetrate through the middle of the conductive block 2 to be connected with the conductive block 2, the conductive block 2 is arranged in the middle of the grid strips 12, and the conductive block 2 is further easily connected with plugs of the two terminals.

Wherein, in the contact is inserted to the convenience of terminal plug, the side of conducting block 2 all sets up to arc spigot surface 3, and when arc spigot surface 3 can make the plug contact conducting block 2, can be along the smooth slip of arc spigot surface 3 between a plurality of conducting blocks 2, improve the installation effectiveness.

In order to further facilitate the insertion of the plug into the contact and further improve the installation efficiency, an inclined guide surface 4 is provided at one corner of the conductive block 2 near the center of the connection ring 11, and the inclined guide surface 4 extends from the end surface of the conductive block 2 connected with the grid bars 12 to the side surface of the conductive block 2 and gradually inclines towards the direction near the center of the connection ring 11.

The conductive block 2 is matched with the grid bars 12 in a clamping mode, the structure is simple, and the production efficiency is improved.

Specifically, the conductive block 2 includes a first conductive part 21 and a second conductive part 22, two opposite sides of the first conductive part 21 are provided with a convex clamping structure 211, the second conductive part 22 is provided with a groove 221 matched with the clamping structure 211 in a clamping manner, during production, the first conductive part 21 and the second conductive part 22 are respectively placed at two side positions of the grid bar 12, then the clamping structure 211 of the first conductive part 21 is clamped into the groove 221 of the second conductive part 22, then the first conductive part 21 and the second conductive part 22 clamped together are stamped by a mold, so that the first conductive part 21 and the second conductive part 22 are stamped into a rectangular plate-shaped structure, the first conductive part 21 and the second conductive part 22 are firstly provided with the clamping structure 211 and the groove 221, the first conductive part 21 and the second conductive part 22 are preliminarily positioned, and the first conductive part 21 and the second conductive part 22 are conveniently and accurately installed on the grid bar 12, then, the first conductive part 21 and the second conductive part 22 are pressed to firmly connect the first conductive part 21 and the second conductive part 22 with the grid bar 12, so that looseness does not occur.

Two limiting parts 126 for blocking the motion of the conductive block 2 are arranged on two sides of the conductive block 2 of the grid bar 12.

Specifically, each grid bar 12 includes two connecting portions 125, two spacing portions 126 and a joint portion 127, two the spacing portions 126 are located at the both ends of the joint portion 127 respectively, two the connecting portions 125 are connected with one side of two spacing portions 126 far away from the joint portion 127 respectively, one side of the connecting portion 125 far away from the spacing portions 126 is connected with the connecting ring 11, the both ends of the spacing portions 126 protrude out of the both sides of the joint portion 127, that is to say, the length a of the side edge where the spacing portions 126 are connected with the joint portion 127 is greater than the length b of the side edge where the joint portion 127 is connected with the spacing portions 126, the conductive block 2 is installed on the joint portion 127, and the conductive block 2 is limited by the both sides where the spacing portions 126 protrude out of the joint portion 127, so that the conductive block 2 cannot slide up and down along the grid bar 12, which is more favorable for improving the electrical connection between the conductive block 2.

Wherein, in order to facilitate the installation equipment insert the contact in the sleeve of conductor terminal, be equipped with on the go-between 11 and let a mouthful 111, during the installation, through extrusion go-between 11, make the both ends of go-between 11 to the position of letting a mouthful 111 be close to each other, and then make the diameter of go-between 11 reduce, be convenient for the smooth installation of contact to the sleeve of conductor terminal in, and because the elastic body 1 of contact has elasticity, after the contact is installed to the sleeve of conductor terminal in, elastic body 1 has the trend of recovering original shape under the effect of self elastic force, carry out the go-between 11 joint that makes the contact in the sleeve of terminal conductor firmly, be difficult for taking place to remove in the sleeve of terminal conductor.

Specifically, two ends of the connection ring 11 located at the let opening 111 are respectively provided with a first positioning portion 112 and a second positioning portion 113, the first positioning portion 112 is disposed on one side away from the conductive block 2, the second positioning portion 113 is disposed on one side close to the conductive block 2, one surfaces of the two second positioning portions 113 of the connection ring 11 away from the conductive block 2 respectively abut against two surfaces of the connection ring 11, close to the conductive block 2, of the first positioning portion 112, and the first positioning portion 112 and the second positioning portion 113 are arranged to prevent the two connection rings 11 from being vertically displaced.

Wherein, two said connecting rings 11 and a plurality of grid bars 12 are integrated into one piece.

Example 2

A method for manufacturing a contact of a mating connector, as shown in fig. 5 to 9, comprising the steps of:

taking a flat stainless steel material 5, and punching a plurality of grid strips 12 arranged at intervals and two connecting plates 6 respectively connected with two ends of the grid strips 12 on the flat stainless steel material 5 through a punching die to obtain a stainless steel workpiece as shown in figure 1;

step two, taking two conductive materials 7, as shown in fig. 6, punching a convex clamping structure 211 on two opposite sides of one conductive material 7 through a punching die, punching a groove 221 matched with the clamping structure 211 in a clamping manner on the other conductive material 7, and then punching and distributing the two conductive materials 7 according to the shape of the conductive block 2;

step three, as shown in fig. 7 and 8, the conductive material 7 with the groove 221 and the conductive material 7 with the clamping structure 211 which are punched and distributed in the step two are respectively placed on two sides of the grid bars 12, and the two conductive materials 7 are clamped on the grid bars 12 through the clamping matching of the clamping structures 211 on the two conductive materials 7 and the groove 221;

punching the conductive material 7 clamped on the grid bars 12 through a punching die, so that the two conductive materials 7 which are clamped and matched with each other are punched into a flat plate structure, and referring to the structure shown in fig. 8;

step five, stamping and bending the grid bars 12 which are stamped in the step four and are fixed with the conductive material 7 through a stamping die, and twisting one sides of the conductive material 7 and the grid bars 12 by 30-70 degrees;

and step six, as shown in fig. 9, performing rounding treatment on the stainless steel workpiece processed in the step five through a die, and enabling two ends of a connecting plate 6 on the stainless steel workpiece to be close to each other until the stainless steel workpiece forms a circular ring shape to obtain the contact element.

While the preferred embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (10)

1. A contact for a compression connector, comprising: the elastic body comprises two connecting rings and a plurality of grid strips arranged between the two connecting rings at intervals, the grid strips comprise a first side and a second side which are respectively connected with the two connecting rings and a third side and a fourth side which are arranged between the first side and the second side, the third side and the fourth side are oppositely arranged, the third side of each grid strip is twisted to enable the third side of each grid strip to be positioned close to the center direction of the connecting rings, and each grid strip is provided with a conductive block.

2. The contact of a mating connector according to claim 1, wherein: the third side of the grid bars rotates 30-70 degrees in the direction close to the center of the connecting ring.

3. The contact of a mating connector according to claim 1, wherein: the grid strip is arranged on the bottom of the grid strip, the grid strip penetrates through the middle of the grid strip and is connected with the conductive block, and the conductive block is arranged in the middle of the grid strip.

4. The contact of a mating connector according to claim 1, wherein: the sides of the conductive blocks are all set to be arc-shaped guide surfaces.

5. The contact of a mating connector according to claim 1, wherein: an inclined guide surface is arranged at one corner of the conductive block close to the center of the connecting ring, and the inclined guide surface extends from the end face of the conductive block connected with the grid strip to the side face of the conductive block and gradually inclines towards the direction close to the center of the connecting ring.

6. The contact of a mating connector according to claim 1, wherein: and the conductive blocks are in clamping fit with the grid bars.

7. The contact of a mating connector according to claim 6, wherein: two limiting parts for blocking the movement of the conductive block are arranged on two sides of the grid bar, which are positioned on the conductive block.

8. The contact of a mating connector according to claim 1, wherein: and a position yielding port is arranged on the connecting ring.

9. The contact of a mating connector according to claim 1, wherein: the two connecting rings and the plurality of grid bars are integrally formed.

10. A method for preparing a contact of a tight connector, comprising: the preparation method comprises the following preparation steps:

firstly, taking a flat stainless steel material, and then punching a plurality of grid strips arranged at intervals and two connecting plates respectively connected with two ends of the grid strips on the flat stainless steel material through a punching die to obtain a stainless steel workpiece;

step two, taking two conductive materials, punching a convex clamping structure on two opposite sides of one conductive material through a punching die, and punching a groove matched with the clamping structure in a clamping manner on the other conductive material;

step three, respectively arranging the two conductive materials punched in the step two on two sides of the grid bars, and clamping the two conductive materials on the grid bars through clamping matching of clamping structures on the two conductive materials and grooves;

punching the conductive materials clamped on the grid bars through a punching die, so that the two conductive materials clamped and matched with each other are punched into a flat plate structure;

step five, the grid bars fixed with the conductive materials and punched in the step four are punched and bent through a punching die, so that the conductive materials and one side of the grid bars rotate;

and step six, performing rounding treatment on the stainless steel workpiece subjected to the treatment in the step five through a die, and enabling two ends of a connecting plate on the stainless steel workpiece to be close to each other until the stainless steel workpiece forms a circular ring shape to obtain the contact element.

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